492 
Transactions of the Society. 
112. G. connatum Breb. III. Pu., Th. YI. N. 
113. C. pseudoconnatum Nordst, VI. N. 
*114. G. gonioides West and G. S. West. III. Th. 
The specimens were rather smaller than those originally described, 
and the vertical view was not perfectly circular. 
Long. 14 • 5-15 * 5 fi ; lat. 7 • 5 p. 
115. G. Gucurbita Breb. III. Bi., C., E., Th. (with zygospores). 
IV. Ks. VII. D., Gp. VIII. HI., B,. T. 
Diam. zygosp. 30-32 p. (PI. VI. fig. 26.) 
116. G. obcuneatum West. VII. D., abundant. 
117. G. Thwaitesii Ralfs. II. Pu. III. Mp. 
118. G. annulatum (Nag.) De Bary. VIII. T. 
119. C. elegantissimum Lund. III. Th. VI. N. 
Genus Cosmocladium Breb. 
1. G. saxonicum De Bary. 111. Th. 
This is referred with hesitation to this species ; it always occurred 
in twos or in fours within a very firm gelatinous investment, and the 
cells were not arranged in one plane. No trace of connecting fila- 
ments could be observed in preserved specimens. It is rather smaller 
than the published dimensions of this species, but the cells were 
elliptic-reniform, and it otherwise seemed to agree. 
Long. 15-17 fi; lat. 13 *5-14*5/^; lat. isthm. 4*5 /jl; 
crass. 8-9 
Genus Spondylosium Breb. 
1. S. pulchellum Arch. VIII. G. 
Genus Staurastrum Meyen. 
1. S. connatum (Lund.) Poy et Biss. VII. D. VIII. G. 
2. 8. dejectum Breb. I. Ep. III. Bi., C. 5 E., Pu., Th. VI. N. 
VII. D. VIII. G., EL, R., T., W. Subsp. TeUamii West. 
VIII. G. 
3. S. apiculatum Breb. III. C., Th. (with zygospores). VIII. T. 
4. 8. mucronatum Ralfs. IV. Ks. 
5. S. Dickiei Ralfs. III. E., Fg., Pu. (with zygospores), Th. 
IV. Ks. VI. N. (with zygospores). 
Forma punctata West. III. Th. 
Var. semicirculare W. B. Turner. III. Th. 
6. S. glabrum (Ehrenb.) Ralfs. III. Bi. 
7. S. brevispinum Breb. III. Th. VI. N. 
8. S. cuspidatum Breb. I. Ep. III. M., Pu., Th. IV. Ks. 
V. Go. VI. N. (with zygospores). VII. D. 
